//
//  UIButton+Addition.m
//  VipVideo-iPhone
//
//  Created by LiHongli on 2018/12/22.
//  Copyright © 2018 SV. All rights reserved.
//

#import "UIButton+Addition.h"
#import <objc/runtime.h>

@implementation UIButton (Addition)

static char topNameKey;
static char leftNameKey;
static char bottomNameKey;
static char rightNameKey;

- (void)setEnlargeEdge:(CGFloat) size
{
    objc_setAssociatedObject(self, &topNameKey,   [NSNumber numberWithFloat:size], OBJC_ASSOCIATION_COPY_NONATOMIC);
    objc_setAssociatedObject(self, &leftNameKey,  [NSNumber numberWithFloat:size], OBJC_ASSOCIATION_COPY_NONATOMIC);
    objc_setAssociatedObject(self, &bottomNameKey,[NSNumber numberWithFloat:size], OBJC_ASSOCIATION_COPY_NONATOMIC);
    objc_setAssociatedObject(self, &rightNameKey, [NSNumber numberWithFloat:size], OBJC_ASSOCIATION_COPY_NONATOMIC);
}

- (void)setEnlargeEdgeWithTop:(CGFloat) top left:(CGFloat) left bottom:(CGFloat) bottom right:(CGFloat) right
{
    objc_setAssociatedObject(self, &topNameKey,   [NSNumber numberWithFloat:top],   OBJC_ASSOCIATION_COPY_NONATOMIC);
    objc_setAssociatedObject(self, &leftNameKey,  [NSNumber numberWithFloat:left],  OBJC_ASSOCIATION_COPY_NONATOMIC);
    objc_setAssociatedObject(self, &bottomNameKey,[NSNumber numberWithFloat:bottom],OBJC_ASSOCIATION_COPY_NONATOMIC);
    objc_setAssociatedObject(self, &rightNameKey, [NSNumber numberWithFloat:right], OBJC_ASSOCIATION_COPY_NONATOMIC);
}

- (CGRect)enlargedRect
{
    NSNumber* topEdge    = objc_getAssociatedObject(self, &topNameKey);
    NSNumber* rightEdge  = objc_getAssociatedObject(self, &rightNameKey);
    NSNumber* bottomEdge = objc_getAssociatedObject(self, &bottomNameKey);
    NSNumber* leftEdge   = objc_getAssociatedObject(self, &leftNameKey);
    
    if (topEdge && rightEdge && bottomEdge && leftEdge)
    {
        return CGRectMake(self.bounds.origin.x    - leftEdge.floatValue,
                          self.bounds.origin.y    - topEdge.floatValue,
                          self.bounds.size.width  + leftEdge.floatValue + rightEdge.floatValue,
                          self.bounds.size.height + topEdge.floatValue + bottomEdge.floatValue);
        
    } else
    {
        return self.bounds;
    }
}

- (BOOL)pointInside:(CGPoint)point withEvent:(UIEvent *)event
{
    CGRect rect = [self enlargedRect];
    
    if (CGRectEqualToRect(rect, self.bounds))
    {
        return [super pointInside:point withEvent:event];
    }
    return CGRectContainsPoint(rect, point) ? YES : NO;
}

@end
